I know AMD had a lot of trouble with the interposer after Zen2 or so, due to being stuck on the same socket. Keeping compatibility became more and more expensiv

I know AMD had a lot of trouble with the interposer after Zen2 or so, due to being stuck on the same socket. Keeping compatibility became more and more expensive. Though Zen 1 was a much different product than the later generations (no I/O die) so maybe that was an unusually bad situation.